Connectivity Search

Find compounds and its sources by its InChI connectivity layers, i.e., formula, connections, H atoms and charge layers of the InChI. Similar to the compound search, compounds to compare connectivity with can be looked up using InChI, InChI Key, a source compound ID or a Unique Compound ID (UCI)

The image representation in the Searched Compound card is an approximated depiction of the found molecule. It might not represent exactly the found compound. For a better image of the compound please follow the link to one of the found sources.

InChI and InChIKey

Find the sources linked to the IUPAC international chemical identifier for your compound or its hashed InChI form.

Source Compound ID

Compounds can be found by the ID assigned on a source database, simply select the Source of the compound and in the box right next to the selector enter the ID for that particular compound in the given Source.

UniChEM Identifier (UCI)

The UCI (UniChEM Identifier) is the number we use to identify a distinct compound with its linked sources in our database.